Psalm 119:70 in the World English Bible
Their heart is as callous as the fat, but I delight in your law.
Context
69 The proud have forged a lie against me: but I will keep thy precepts with my whole heart.
70 Their heart is as fat as grease; but I delight in thy law.
71 It is good for me that I have been afflicted; that I might learn thy statutes.